It carries a D tripping characteristic for high-inrush loads and a Type AC 30 mA residual current sensitivity for sinusoidal earth faults.
The D characteristic means the magnetic trip is set to 10–20× In (630–1260 A instantaneous), sized for loads with high starting currents — motor starters, small transformers, or discharge lighting banks — without nuisance tripping on inrush. The 30 mA residual sensitivity covers personnel protection (indirect contact) and fire prevention for AC circuits; At 63 A per pole, this RCBO handles 3-phase distribution subfeeds up to that current. Eight module spaces on a DIN rail means it fills about 144 mm of rail width — plan the enclosure fill factor accordingly.